772320009 has 8 divisors (see below), whose sum is σ = 1031516640. Its totient is φ = 514001696.

The previous prime is 772320007. The next prime is 772320011. The reversal of 772320009 is 900023277.

It is an interprime number because it is at equal distance from previous prime (772320007) and next prime (772320011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 772320009 - 2¹ = 772320007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (772320007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217524 + ... + 221045.

It is an arithmetic number, because the mean of its divisors is an integer number (128939580).

Almost surely, 2^772320009 is an apocalyptic number.

It is an amenable number.

772320009 is a deficient number, since it is larger than the sum of its proper divisors (259196631).

772320009 is a wasteful number, since it uses less digits than its factorization.

772320009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439159.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 772320009 is about 27790.6460702158. The cubic root of 772320009 is about 917.4852594850.

The spelling of 772320009 in words is "seven hundred seventy-two million, three hundred twenty thousand, nine".